@article{CMJ_1999__49_2_a11,
     author = {Mehri, Bahman and Nojumi, Mohammad H.},
     title = {Unique solvability of a linear problem with perturbed periodic boundary values},
     journal = {Czechoslovak Mathematical Journal},
     pages = {351--362},
     publisher = {mathdoc},
     volume = {49},
     number = {2},
     year = {1999},
     mrnumber = {1692528},
     zbl = {0955.34007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_1999__49_2_a11/}
}